Safety attachment for boilers.



W. P. SMITH.

SAFETY ATTAGHMENT FOR BILERS.

APPLICATION FILED JULY 15,1911. A

1,040,800. Patented @018,191.2

lfliii W E5.- LVI/ ENTU/e mms W. P .S m 11h W A *A I y WILLIAII I. SMITH, or LocUsT'caovE, VIRGINIA SAFETY ATTACHMENT ron normas.

`Specification of Letters l'atent.

I Patented oct. s, 1912.

Application tiled July 15, v1911. SeriaI'No. 638,711.

To all 'whom t may concern.' l

Be it known that I, WILLIAM P. SMITH, a citizen of the United States, residing at Locust Grove, in the county of Orange and State of Virginia, have invented certain new and useful Improvements in Safety Attachments for Boilers; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invent-ion relates to new and useful improvements in safety attachments for boilers and my object is to place in the usual or in any preferred form of glass gage a float which is adapted to rise and fall with the action of the water in the gage.

A further object is to provide a pair of contact points and extend the same through the wall of the gage, said contact points being connected with a battery and signaling mechanism, and, a further object is to provide metallic parts for the float whereby when both of the contact points are in en'- gagement therewith the circuit will be closed and the. signal operated.

Other objects and advantages will be hereinafter set forth and pointed out in the speciication. Y

In the accompanying drawings, which are made a part of this application, Figure 1 is an elevation of the gage showing my improved contact mechanism applied thereto. Fig. 2 is an enlarged det-ail sectional view of the gage and float.

Referring to the drawings in which simi-v lar reference numerals designate corresponding parts throughout the several views,

l indicates the gage, which preferably consists of an elongated glass tube, having an anchoring means 2 at each end thereof, which anchoring means is hollow and connects with the interior`of a boiler (not shown) so that the amount of water contained in the boiler will be indicated in the boiler, the greater amount of water in the boilv r the higher the water extends in the and in order to guard. against the possibility of the water becoming so low in the boiler as to reach the danger point I have tance from the boiler he will be notied when the water has reached the danger point.

The signaling mechanism comprises a cylindrical `float 3, which is preferably constructed of cbrk or similar substance, which is introduced into the gage and moves upwardly` and downwardly therein with the movement of the Water. vided with a jacket or covering 4, preferably of copper or similar non-corroding sub; stance, the ends of the jacket being swaged ory bent inwardlypover the ends of the float. Extending through the wall of the gage| is a pair of contact points, or bolts 5, the inner ends thereof being rounded so that when the rounded ends of the float come in contact therewith a perfect contact is made owin to the binding action between the two roun ed surfaces. Attached to the contact oints 5 are wires 6 which are in turn attac ed to a suitable battery and signaling mechanism, (not shown).

In practice the water in the boiler is normally kept at such a stage as to cause the water in the gage to extend to a point adjacent the upper end thereof, thus normally supporting the float at the upper end of the gage the float being of slightly less diameter than the interior of the gage so as not to close communication through the gage. If for any reason a new supply of water is not placed in the boiler the water in the gage will descend at the volume of water in the boiler is converted into steam, thereby lowering the float and b placing the contact points adjacent the ower end of the gage the signal will not be operated until nearly all of the water is consumed in the boiler. As soon as the loat has descended until both of the contact points are in engagement with The float is prothe float, the electric circuit will 'be closed J, and the signal operated, and the signal will K continue in operation until a new supply 4of water is added to the boiler and the float elevated out of engagement with the contact oints.

What I claim is:

1. A float attachment` for boilers comprising the combination with a gage of a pair of contact points extending through the wall `of the gage and spaced longitudinally thereof,

10 having @emma of. this paient meg? be obtained. fel ive canes een Weshingon., lsb, 61

meeseee with the rounded ends of the points and cemplee the circuit between che contee'; points,

in 'tesimony whereof lieve signed my neme to this specification in be pi'esence of 'i5 two subscribing lvv/iinesses., 

